export declare function dbNowLiteral(isPostgres: boolean): string;
export declare function dbNowPlusMsLiteral(isPostgres: boolean, ms: number): string;
export declare function columnPlusMsLiteral(isPostgres: boolean, columnExpr: string, ms: number): string;
export declare function columnOrNowPlusMsLiteral(isPostgres: boolean, columnExpr: string, ms: number): string;
export declare function laterOfColumnAndNowPlusMsLiteral(isPostgres: boolean, columnExpr: string, ms: number): string;
export declare function parseDbTime(value: Date | string): Date;